View Code of Problem 448

#include<iostream>
#include<string>
#include<cmath>
#include<cstring>
#include<iomanip>
#include<cstdio>
#include<algorithm>
#include<ctype.h>
using namespace std;
int main()
{
	long long int n;
	while (cin >> n)
	{
		while (n--)
		{
			int a, b;
			cin >> a >> b;
			//double num1;
			if (a <= 3)
			{
				double z = b * (2.5 / 4 - 2 / 5.0);
				int num = (int)(z + 0.5);
				cout << num << endl;
				continue;
			}
			else if (a > 3 && a <= 10)
			{
				double num1=(a-3)*2+ b *  2 / 5.0;
				double num2 = (a - 3)*2.5 + b * 2.5 / 4 ;
				int num = (int)(num2 + 0.5)- (int)(num1 + 0.5);
				cout << num << endl;
				continue;
			}
			else
			{
				double num1 = 7* 2 + b * 2 / 5.0+(a-10)*3;
				double num2 = 7*2.5 + b * 2.5 / 4+(a-10)*3.75;
				int num = (int)(num2 + 0.5) - (int)(num1 + 0.5);
				cout << num << endl;
				continue;
			}
		}
	}
}